120854609 has 2 divisors, whose sum is σ = 120854610. Its totient is φ = 120854608.

The previous prime is 120854599. The next prime is 120854623. The reversal of 120854609 is 906458021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 60403984 = 7775^2 + 7772^2 .

It is a cyclic number.

It is not a de Polignac number, because 120854609 - 2⁸ = 120854353 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120854509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60427304 + 60427305.

It is an arithmetic number, because the mean of its divisors is an integer number (60427305).

Almost surely, 2^120854609 is an apocalyptic number.

It is an amenable number.

120854609 is a deficient number, since it is larger than the sum of its proper divisors (1).

120854609 is an equidigital number, since it uses as much as digits as its factorization.

120854609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 120854609 is about 10993.3893317757. The cubic root of 120854609 is about 494.4105611797.

The spelling of 120854609 in words is "one hundred twenty million, eight hundred fifty-four thousand, six hundred nine".